<template>
  <view v-if="goods_info.goods_name" class="goods-detail-conainer">
    <!-- 轮播图 区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体 -->
      <view class="goods-info-body">
        <!-- 商品名字 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏区 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
           <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">
        快递：免运费
      </view>
    </view>
    <!-- 富文本属性动态渲染商品介绍 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航组件区 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import { mapState,mapMutations,mapGetters } from 'vuex'
  
  export default {
    computed:{
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total'])
    },
    watch:{
      // total(newVal){
      // const findResult = this.options.find(x => x.text === '购物车')
      //   if(findResult){
      //     findResult.info = newVal
      //   }
      // }
      //定义一个total监听器，监听购物车的商品数量
      total:{
        handler(newVal){
          const findResult = this.options.find(x => x.text === '购物车')
            if(findResult){
              findResult.info = newVal
            }
        },
        //immediate属性用来声明此监听器，是否在页面初次加载完毕后立即调用
        immediate:true
      }
    },
    data() {
      return {
        goods_info:{},
         options: [{
                    icon: 'shop',
                    text: '店铺',
                    infoBackgroundColor:'#007aff',
                    infoColor:"red"
                }, {
                    icon: 'cart',
                    text: '购物车',
                    info: 0
                }],
                buttonGroup: [{
                  text: '加入购物车',
                  backgroundColor: '#ff0000',
                  color: '#fff'
                },
                {
                  text: '立即购买',
                  backgroundColor: '#ffa200',
                  color: '#fff'
                }
                ]
      };
    },
    onLoad(options) {
      console.log(options)
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods:{
      ...mapMutations('m_cart',['addToCart']),
    async  getGoodsDetail(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id:goods_id})
        if(res.meta.status !== 200) return uni.$showMsg()
        
        // 对数据进行处理再赋值,/sth/g 表示对全局的sth进行替换
       res.message.goods_introduce = res.message.goods_introduce.replace(/<img/g,'<img style="display:block;"').replace(/webp/g,'jpg')
        this.goods_info = res.message
      },
      preview(i){
        //调用 uni.previewImage()方法预览图片
        uni.previewImage({
          //预览时默认显示图片的索引
          current:i,
          //获取轮播图所有的图片
          urls:this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e){
        // console.log(e)
        if(e.content.text === '购物车'){
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
      buttonClick(e){
        if(e.content.text === '加入购物车'){
          //组织商品的信息对象
          // {goods_id,goods_name,goods_price,goods_count,goods_small_logo,goods_state}
          const goods = {
            goods_id:this.goods_info.goods_id,
            goods_name:this.goods_info.goods_name,
            goods_price:this.goods_info.goods_price,
            goods_count:1,
            goods_small_logo:this.goods_info.goods_small_logo,
            goods_state:true
          }
          //调用addToCart方法
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
swiper{
  height: 750rpx;
  width: 100%;
  image{
    width: 100%;
    height: 100%;
  }
}
.goods-info-box{
  padding: 10px;
  padding-right: 0;
  .price{
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}
  .goods_nav{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
  .goods-detail-conainer{
    padding-bottom: 50px;
  }
</style>
